While we still do not have a definite answer as to how long he has been upset with the company, we do know now that CM Punk was already contemplating a departure from WWE as early as Royal Rumble 2014. He vented to Mick Foley at the time about not being happy within the company and having trouble dealing with injuries.
"That is another reason I'm pretty sure I won't be returning there any time soon. Hunter was pretty obviously jealous of certain individuals. I'm not saying he was jealous of me. I could tell he was envious of (Rob) Van Dam. He was extremely envious of Rob's success. He was jealous of Van Dam's personality. He was jealous that people gravitated towards Rob, because people liked being around Rob because he was very positive. The most glaring was the work rate. Hunter has had the same matches his whole career. If the guy is so damn tough, why does he need a sledgehammer. How do you justify this guying be a bad ass if he always has a weapon. Hunter is like that nerd that throws out a joke expecting the room to start laughing and ends up laughing at his own joke."
"Chris was dark, he was extremely dark. We used to have a joke that Chris was tri-polar, because it was a step up from bi-polarity. He would flip sometimes. I think a combination of Chris' background of with steroids, mixed with the partying, is a recipe for disaster. One of them is a recipe for disaster. Its literally taking Drano and pouring it on your hard drive. See what that does for your computer."